Base for cosmetics



United States Patent Ofiice 3,211,618 Patented Oct. 12, 1965 3,211,618BASE F OR COSMETICS Helene Kambersky, Hegelgasse 6, Vienna, Austria NoDrawing. Filed June 26, 1961, Ser. No. 119,270 Claims priority,application Austria, July 8, 1960, A 5,282/60 Claims. (Cl. 167-85) Thisinvention relates to a base for a cosmetic, particularly a cosmetic foreyelashes and eyebrows.

It is known from Austrian patent specification No. 142,033 to useaqueous wax emulsions containing a volatile oil, such as turpentine, forsuch cosmetics. In Austrian Patent No. 159,218 it is proposed to add avolatile constituent consisting of an ester of a volatile acid, e.g.,formic acid ester.

Whereas these cosmetics have good adherence because the volatilesubstances evaporate soon after application to leave a finewater-insoluble film, the turpentine content of about 50%, which wasrequired, involved the disadvantage that the turpentine in such highconcentration had a strong odor and was not tolerable by sensitivepersons owing to its known irritating effect on the skin. In Austrianpatent specification No. 188,854 it was proposed to add a drying oil,such as linseed oil, and a fatty oil, such as castor oil, to an aqueousemulsion of wax and turpentine. This enables a reduction of the contentof turpentine to less than one half of the amount previously requiredwithout reducing the suppleness and adherence of the cosmetic.Nevertheless, the odor and sometimes also the irritating effect ofturpentine was still a disadvantage when the same was used even insmaller amounts.

It has now been found that an excellent base for cosmetics, particularlyfor mascara and eyebrow paint, can be obtained on the basis of aqueouswax emulsions if the previously used turpentine is replaced by a mixtureof linear parafiins of highest purity and free of aromatics,particularly of isoparaifins having a boiling range between about 160 C.and about 200 C. A mixture which has proved particularly suitablecomprises isoparafiins of highest purity, having a boiling range ofabout 180 C. and about 190 C, which can be obtained by catalyticprocesses from cracked gases and other low-boiling petroleumhydrocarbons and is available, e.g., under the trade name Shellsol-T.

These products consist of a colorless, highly fluid, oily liquid whichis odorless and chemically inert. They are distinguished from turpentineby having a beneficial ef fect on the skin. There is no irritationexperienced whatever. When a cosmetic prepared with these products hasbeen applied, e.g., to the eyelashes, moreover the cosmetics will drywithin a few minutes to form a nonsmearing, firmly adhering,moisture-resisting film.

It has been found that when the components of the cosmetic areemulsified in the usual manner, the paraffins provided according to theinvention together with an emulsifier, the desired pigments and perfumesand, 1f desired, a substance acting as an odor carrier, such asterpmeol, give a homogeneous emulsion of excellent quality. Suitableemulsifiers include, above all, mixtures of higher fatty alcohols and/orfatty alcohol sulfonates, such as the products known under the tradename Lanette Wax.

The base for cosmetics according to the invention contains preferablyabout 10-60% parafiins, depending on the desired consistency of thecosmetic. Owing to the ease with which these parafiins can beemulsified, and because of their odorlessness and harmlessness, theparaf' fins may be used in such large quantities that it is possible, ascontrasted with the use of turpentine, to make a cosmetic, e.g., amascara, in semiliqu-id form. Such a cosmetic has the advantage that itcan be applied easily and in a very thin layer. Besides, it is moreeconomical in consumption than the previous, thicker emulsions, whichadhere to the tube walls so that when the contents of the tube aregradually consumed, part of it always remains in the tube withoututilization, whereas the more fluid product can easily be squeezed outof the tube and be entirely removed therefrom.

The base for cosmetics according to the invention may desirably containsmall additions of a drying oil and/ or a fatty oil. The presence of adrying oil, such as linseed oil, promotes a rapid drying of the cosmeticon the surface to which it is applied and prevents a subsequent smearingor sticking together of eyelash hairs. The fatty oil, such as castoroil, improves the suppleness and supplies a nutritive substance to theskin.

The quantitative proportions of the components may lie Within thefollowing limits:

Percent by weight Wax (beeswax, ceresine or the like) 20-30 Paraffinmixture 10-60 Emulsifier (such as Lanetta Wax N) 5-10 Water 10-40 Dryingoil, such as linseed oil 0-5 Fatty oil, such as castor oil 0-8 In thefollowing examples, specific compositions of the base for cosmeticsaccording to the invention are disclosed, whereas the invention is notrestricted thereto.

Example 1 Percent by weight Beeswax 20 Shellsol-T (isoparaflin mixtureboiling point between C. and about C.) 60 Castor oil 2 Lanette Wax 5Water 13 Example 2 Beeswax 30 Shellsol-T 12 Castor oil 8 Lanette Wax N10 Water 40 Example 3 Beeswax 25 Shellsol-T 30 Lanette Wax N 10 Water 35 Example 4 Beeswax 26 Shellsol-T "30 Castor oil 5 Linseed oil 4 LanetteWax N 10 Water 25 I claim:

1. A base for a mascara, comprising an aqueous emulsion containing, byweight, about 20-30% wax, about lO-60% of a mixture of linear paraffinssubstantially free of aromatics, which mixture has a boiling rangebetween about 160 C. and about 200 C., about 5-10% of an ern-ulsifierselected from the class consisting of higher fatty alcohols, higherfatty alcohol sulfonates and mixtures thereof, and about 10-40% water.

2. A base as claimed in claim 1, which contains up to 5 percent byweight of a drying oil.

3. A base as claimed in claim 1, which contains up to 10 percent byweight of a fatty oil.

4. A base as claimed in claim 1, which contains up to percent by weightof a drying oil and up to percent by weight of a fatty oil.

5. A base as claimed in claim 1, in which said Wax comprises beeswax.

6. A base as claimed in claim 1, which contains up to 5 percent byweight of linseed oil.

7. A base as claimed in claim 1, which contains up to 10 percent byweight of castor oil.

8. A base as claimed in claim 1, which contains up to 5 percent byweight linseed oil and up to 10 percent by weight castor oil.

9. A base as claimed in claim 1, which said mixture consists ofisoparaffins.

10. A base as claimed in claim 9, in which said mixture has a boilingrange between about C. and about C.

4- References Cited by the Examiner UNITED STATES PATENTS 5 FOREIGNPATENTS 208,806 6/57 Australia.

OTHER REFERENCES Bennett, Commercial Waxes, Chem. Pub. Co., New York,1956, pp. 509, 537, 604, 611.

Shellsol T, Shell Oil Co., New York, booklet pp. 1-3, February 1961.

Zimmerman et al., Handbook of Material Trade Names 15 IndustrialResearch Service, Dover, N.H., Supp. 1 to 1950 Ed. (1956), pp. 213 214.

JULIAN S. LEVITT, Primary Examiner.

MORRIS O. WOLK, LEWIS GOTTS, Examiners.

1. A BASE FOR A MASCARA, COMPRISING AN AQUEOUS EMULSION CONTAINING, BYWEIGHT, ABOUT 20-30% WAX, ABOUT 10-60% OF A MIXTURE OF LINEAR PARAFFINSSUBSTANTIALLY FREE OF AROMATICS, WHICH MIXTURE HAS A BOILING RANGEBETWEEN ABOUT 160*C. AND ABOUT 200*C., ABOUT 5-10% OF AN EMULSIFIERSELECTED FROM THE CLASS CONSISTING OF HIGHER FATTY ALCOHOLS, HIGHERFATTY ALCOHOL SULFONATES AND MIXTURES THEREOF, AND ABOUT 10-40% WATER.